"A sentient skull appearing in the folk tales of Dominica. Those who hear its high-pitched laugh are doomed to die.The skull, which holds the brain that governs the senses, is believed to have tremendous spiritual powers. Stories about the power of skulls can be found in cultures throughout the world."

—Shin Megami Tensei IMAGINE Compendium

Chatterskull can be contracted in Ichigaya Camp's silver-level instance and in Ikebukuro at night. It acts as a nightmare variant in the gold-level instance of Ichigaya Camp with a 90% chance to null any physical attack and as a minor field boss on Ueno field.